CN219740102U - Water cooling system of permanent magnet synchronous motor - Google Patents
Water cooling system of permanent magnet synchronous motor Download PDFInfo
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- CN219740102U CN219740102U CN202321348089.1U CN202321348089U CN219740102U CN 219740102 U CN219740102 U CN 219740102U CN 202321348089 U CN202321348089 U CN 202321348089U CN 219740102 U CN219740102 U CN 219740102U
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- motor
- water
- rotor
- cooling system
- rotor core
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 238000001816 cooling Methods 0.000 title claims abstract description 52
- 230000001360 synchronised effect Effects 0.000 title abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 239000000110 cooling liquid Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 56
- 229910000831 Steel Inorganic materials 0.000 abstract description 17
- 239000010959 steel Substances 0.000 abstract description 17
- 230000005347 demagnetization Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to the technical field of motor equipment, in particular to a water cooling system of a permanent magnet synchronous motor, which comprises a motor base, a water seal, a motor stator assembly, a motor rotor assembly, a water isolation cup and a motor rear cover, wherein the motor base is provided with a water inlet; the upper side of the motor base is provided with a water inlet and a water outlet, the motor rotor assembly is assembled in two bearings in the motor base, the middle part of a rotor shaft on the motor rotor assembly is provided with a water outlet through hole, a water seal is connected to the upper side of the rotor shaft, the water seal and the rotor shaft are dynamically sealed, and the water seal is fixedly and hermetically connected to the inner wall of the motor base; the motor stator assembly and the motor rotor assembly are both arranged on the motor base, the water isolation cup is separated between the motor stator assembly and the motor rotor assembly, and the motor rear cover is arranged on the lower side of the motor base. The utility model achieves the aim of cooling the motor rotor by using the circulation of the cooling liquid, thereby cooling the magnetic steel on the motor rotor assembly, avoiding the demagnetization of the magnetic steel caused by the temperature rise, and ensuring the stability of the motor performance.
Description
Technical Field
The utility model relates to the technical field of motor equipment, in particular to a water cooling system of a permanent magnet synchronous motor.
Background
The permanent magnet synchronous motor for the vehicle has the advantages that the motor structure is compact, the air gap between the motor rotor and the stator is small, the temperature rise of the motor is very high when the motor runs at high speed, and the magnetic steel in the rotor is at a demagnetizing risk at high temperature, so that the performance of the motor is affected.
At present, most of permanent magnet synchronous motors for vehicles adopt a motor stator water cooling or oil cooling mode to achieve the effect of cooling the internal temperature rise of the motor, but the temperature rise of rotor magnetic steel is difficult to achieve the ideal cooling effect, so that a water cooling system capable of cooling the magnetic steel is needed.
Disclosure of Invention
The utility model provides a water cooling system of a permanent magnet synchronous motor, which aims to solve the technical problem that the existing water cooling system is poor in cooling effect on magnetic steel.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a water cooling system of a permanent magnet synchronous motor, which comprises a motor base, a water seal, a motor stator assembly, a motor rotor assembly, a water isolation cup and a motor rear cover, wherein the motor base is provided with a water inlet;
the upper side of the motor seat is provided with a water inlet and a water outlet, the motor rotor assembly comprises a rotor shaft, the rotor shaft is rotationally connected to the inner side of the motor seat, and the middle part of the rotor shaft is vertically provided with a water outlet through hole; the water seal is connected to the upper side of the rotor shaft in a sealing way, and the water seal outer ring is fixed and connected to the inner wall of the motor seat in a sealing way; the motor stator assembly and the motor rotor assembly are both arranged on the motor base, the water isolation cup is separated between the motor stator assembly and the motor rotor assembly, and the motor rear cover is arranged on the lower side of the motor base.
Further, the water cooling system also comprises a water inlet pipe and a water outlet pipe; the water inlet pipe and the water outlet pipe are respectively and hermetically connected to the water inlet and the water outlet.
Further, the water cooling system further comprises a rotor core sleeve and a rotor core cover;
the rotor core sleeve is sleeved on the outer ring of the motor rotor assembly, the rotor core cover is connected to the lower side of the rotor core sleeve in a sealing mode, and the rotor core cover and the rotor core sleeve are connected with the outer ring of the rotor shaft in a sealing mode.
Further, annular protrusions are arranged on the rotor core sleeve and the rotor core cover, so that the contact area between the rotor core sleeve and the rotor core cover and the cooling liquid is increased.
Further, the water cooling system also comprises a motor front cover and a motor front cover sealing ring;
the upper side of motor cabinet has offered first through-hole, and the motor protecgulum passes through motor protecgulum sealing washer sealing connection in the first through-hole of motor cabinet.
Further, the water cooling system further comprises a first sealing ring and a second sealing ring;
the upside of water proof cup passes through first sealing washer sealing connection on the inner wall of motor cabinet, and the downside of water proof cup passes through second sealing washer sealing connection on the inner wall of motor back lid.
Further, the water cooling system further comprises two bearings, and the upper side and the lower side of the rotor shaft are respectively connected to the motor base and the motor rear cover in a rotating mode through the two bearings.
Further, the water cooling system further comprises a motor rear cover sealing ring, and the motor rear cover is connected to the motor base in a sealing manner through the motor rear cover sealing ring.
The utility model has the beneficial effects that:
1. compared with the traditional water cooling system for the motor, the water cooling system is additionally provided with the water isolation cup and the first sealing ring and the second sealing ring at the two ends of the water isolation cup, the upper side of the water isolation cup is connected to the inner wall of the motor base in a sealing way through the first sealing ring, the lower side of the water isolation cup is connected to the inner wall of the motor rear cover in a sealing way through the second sealing ring, and therefore the cooling liquid entering from the motor water inlet pipe is guaranteed to only run in the cavity of the water isolation cup and cannot leak to the motor stator area and the outside of the motor.
2. The water cooling system is simple, novel and compact in structure and low in equipment cost, and meanwhile, the water sealing device separates the water inlet area from the water outlet area in the motor by using one water seal, so that the water inlet area and the water outlet area are prevented from being mixed with each other, and the cooling effect of the water cooling system is reduced.
3. The middle part of the rotor shaft in the water cooling system is vertically provided with the water outlet through hole, so that the circulation of cooling liquid in the motor rotor is ensured.
4. The utility model provides a cooling system of a permanent magnet motor rotor, which achieves the aim of cooling the motor rotor by using circulation of cooling liquid, so that the temperature generated by magnetic steel is taken away by the cooling liquid, the effect of cooling the magnetic steel is achieved, the magnetic steel is ensured not to be demagnetized due to temperature rise, and the stability of motor performance is ensured.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is an enlarged view of a schematic cross-sectional view of the present utility model;
FIG. 3 is an enlarged view of a schematic connection of the water-barrier cup to the motor mount and motor rear cover;
fig. 4 is an enlarged view of a connection schematic of the water seal with the motor base and the rotor shaft.
Reference numerals illustrate:
1. a water inlet pipe; 2. a water outlet pipe; 3. sealing water; 4. a first seal ring; 5. a water-proof cup; 6. a second seal ring; 7. a rotor shaft; 8. a bearing; 9. a rotor core cover; 10. a rotor core sleeve; 11. a rotor core; 12. magnetic steel; 20. a motor base; 21. a motor rear cover; 22. a motor rear cover sealing ring; 23. a motor front cover; 24. a motor front cover sealing ring; 100. a motor stator assembly; 101. a motor rotor assembly; 110. and (5) a screw.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples. In the description of the present utility model, the relative orientation or positional relationship is based on the orientation or positional relationship shown in fig. 2, where "up" and "down" refer to the up-down direction of fig. 2, and take fig. 2 as an example, the vertical paper surface is up, the vertical paper surface is down, the vertical paper surface is left, the vertical paper surface is right, the vertical paper surface is inward front, the vertical paper surface is outward rear, the left-right direction is transverse, and the up-down direction is vertical. It is to be understood that such directional terms are merely used to facilitate the description of the utility model and to simplify the description, and are not intended to indicate or imply that the devices or elements so referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying that the number or order of features is indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Referring to fig. 1 to 4, the embodiment of the present utility model provides a water cooling system of a permanent magnet synchronous motor, which comprises a motor base 20, a water seal 3, a motor stator assembly 100, a motor rotor assembly 101, a water isolation cup 5 and a motor rear cover 21;
a water inlet and a water outlet are formed in the upper side of the motor base 20, the motor rotor assembly 101 comprises a rotor shaft 7, the rotor shaft 7 is rotationally connected to the inner side of the motor base 20, and a water outlet through hole is vertically formed in the middle of the rotor shaft 7; a sealing lip is arranged in the inner ring of the water seal 3, the water seal 3 is connected to the upper side of the rotor shaft 7 in a sealing way through the sealing lip, and the outer ring of the water seal 3 is fixed and connected to the inner wall of the motor base 20 in a sealing way; the water seal 3 is used for separating the upper side and the lower side of the motor base 20 into a water outlet area and a water inlet area, so that the water inlet area and the water outlet area are prevented from being mixed with each other, the cooling effect of the water cooling system is reduced, the motor stator assembly 100 and the motor rotor assembly 101 are all installed on the motor base 20, the motor rotor assembly 101 is arranged on the inner side of the motor stator assembly 100, the water isolation cup 5 is separated between the motor stator assembly 100 and the motor rotor assembly 101, and the motor rear cover 21 is detachably installed on the lower side of the motor base 20 through a plurality of screws 110.
In this embodiment, the water cooling system further comprises a water inlet pipe 1 and a water outlet pipe 2; the water inlet pipe 1 and the water outlet pipe 2 are respectively and hermetically connected to the water inlet and the water outlet, and the water pipe can be conveniently connected to the water inlet and the water outlet by arranging the water inlet pipe 1 and the water outlet pipe 2.
Referring to fig. 2, in the present embodiment, the water cooling system further includes a rotor core sleeve 10 and a rotor core cover 9; the rotor core sleeve 10 is sleeved on the outer ring of the motor rotor assembly 101, the rotor core cover 9 is connected to the lower side of the rotor core sleeve 10 in a sealing mode, and the rotor core cover 9 and the rotor core sleeve 10 are connected with the outer ring of the rotor shaft 7 in a sealing mode.
In this embodiment, the motor stator assembly 100 includes a rotor core 11 and a magnetic steel 12, the rotor core 11 is assembled in the rotor core sleeve 10 and the rotor core cover 9, and is welded with the rotor core sleeve 10 and the rotor core cover 9, and the rotor core sleeve 10 and the rotor shaft 7 and the rotor core cover 9 and the rotor shaft 7 are all welded by laser, so as to ensure that the cooling liquid in the water-proof cup 5 cannot enter the magnetic steel 12 inside the motor rotor, thereby ensuring that the magnetic steel 12 cannot rust.
In this embodiment, annular protrusions are disposed on the rotor core sleeve 10 and the rotor core cover 9, so as to increase the contact area between the rotor core sleeve 10 and the rotor core cover 9 and the cooling liquid.
In this embodiment, the water cooling system further includes a motor front cover 23 and a motor front cover sealing ring 24;
the upper side of motor cabinet 20 has seted up first through-hole, and motor protecgulum 23 passes through motor protecgulum sealing washer 24 sealing connection in the first through-hole of motor cabinet 20.
In this embodiment, the water cooling system further comprises a first sealing ring 4 and a second sealing ring 6;
the upper side of the water isolation cup 5 is connected to the inner wall of the motor base 20 in a sealing way through a first sealing ring 4, and the lower side of the water isolation cup 5 is connected to the inner wall of the motor rear cover 21 in a sealing way through a second sealing ring 6.
In this embodiment, the water cooling system further includes two bearings 8, the upper and lower sides of the rotor shaft 7 are respectively rotatably connected to the motor base 20 and the motor rear cover 21 through the two bearings 8, preferably, the two bearings 8 are graphite bearings, the outer ring of each graphite bearing is fixed on the motor base 20 or the motor rear cover 21, the rotor shaft 7 is cooperatively connected with the inner ring of each graphite bearing, and the rotor shaft 7 can rotate in each graphite bearing.
In this embodiment, the water cooling system further includes a motor rear cover sealing ring 22, and the motor rear cover 21 is connected to the motor base 20 by the motor rear cover sealing ring 22 in a sealing manner.
The utility model provides a cooling system of a permanent magnet motor rotor, which achieves the aim of cooling the motor rotor by using circulation of cooling liquid, so that the temperature generated by magnetic steel 12 is taken away by the cooling liquid, the cooling effect of the magnetic steel 12 is achieved, the magnetic steel 12 is ensured not to be demagnetized due to temperature rise, and the stability of motor performance is ensured.
The working process of the utility model is as follows:
when the motor works, cooling liquid enters from the water inlet pipe 1, flows through the water inlet hole on the motor base 20, enters into a gap between the water isolation cup 5 and the motor rotor assembly 101, passes through the water outlet through hole on the rotor shaft 7 and flows out through the water outlet pipe 2. The whole motor rotor assembly 101 (namely, the motor rotor) is soaked in the cooling liquid in the water-proof cup 5, and plays a role in cooling the magnetic steel 12 in the motor rotor.
The product manufactured by the utility model has reliable structure and good motor performance through test and test of reliability, and the motor performance is reduced by 2 percent and meets the requirements of motor test specifications.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Moreover, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the embodiments, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a water cooling system of PMSM which characterized in that: the motor comprises a motor seat (20), a water seal (3), a motor stator assembly (100), a motor rotor assembly (101), a water isolation cup (5) and a motor rear cover (21);
a water inlet and a water outlet are formed in the upper side of the motor base (20), the motor rotor assembly (101) comprises a rotor shaft (7), the rotor shaft (7) is rotationally connected in the motor base (20), and a water outlet through hole is vertically formed in the middle of the rotor shaft (7); the inner ring of the water seal (3) is connected with the upper side of the rotor shaft (7) in a sealing way, and the outer ring is fixed and connected with the inner wall of the motor base (20) in a sealing way; the motor stator assembly (100) and the motor rotor assembly (101) are both arranged on the motor base (20), the water isolation cup (5) is separated between the motor stator assembly (100) and the motor rotor assembly (101), and the motor rear cover (21) is arranged on the lower side of the motor base (20).
2. The water cooling system according to claim 1, further comprising a water inlet pipe (1) and a water outlet pipe (2); the water inlet pipe (1) and the water outlet pipe (2) are respectively and hermetically connected to the water inlet and the water outlet.
3. The water cooling system according to claim 1, further comprising a rotor core sleeve (10) and a rotor core cover (9);
the rotor core sleeve (10) is sleeved on the outer ring of the motor rotor assembly (101), the rotor core cover (9) is connected to the lower side of the rotor core sleeve (10) in a sealing mode, and the rotor core cover (9) and the rotor core sleeve (10) are connected with the outer ring of the rotor shaft (7) in a sealing mode.
4. A water cooling system according to claim 3, characterized in that annular protrusions are provided on the rotor core sleeve (10) and the rotor core cover (9) to increase the contact area of the rotor core sleeve (10) and the rotor core cover (9) with the cooling liquid.
5. The water cooling system according to claim 1, further comprising a motor front cover (23) and a motor front cover seal ring (24);
the upper side of motor cabinet (20) has seted up first through-hole, and motor protecgulum (23) pass through motor protecgulum sealing washer (24) sealing connection in the first through-hole of motor cabinet (20).
6. The water cooling system according to claim 1, further comprising a first sealing ring (4) and a second sealing ring (6);
the upper side of the water isolation cup (5) is connected onto the inner wall of the motor base (20) in a sealing way through a first sealing ring (4), and the lower side of the water isolation cup (5) is connected onto the inner wall of the motor rear cover (21) in a sealing way through a second sealing ring (6).
7. The water cooling system according to claim 1, further comprising two bearings (8), wherein the upper and lower sides of the rotor shaft (7) are rotatably connected to the motor base (20) and the motor rear cover (21) through the two bearings (8), respectively.
8. The water cooling system according to any one of claims 1 to 7, further comprising a motor rear cover seal ring (22), wherein the motor rear cover (21) is sealingly connected to the motor base (20) by the motor rear cover seal ring (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348089.1U CN219740102U (en) | 2023-05-30 | 2023-05-30 | Water cooling system of permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321348089.1U CN219740102U (en) | 2023-05-30 | 2023-05-30 | Water cooling system of permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219740102U true CN219740102U (en) | 2023-09-22 |
Family
ID=88029319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321348089.1U Active CN219740102U (en) | 2023-05-30 | 2023-05-30 | Water cooling system of permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219740102U (en) |
-
2023
- 2023-05-30 CN CN202321348089.1U patent/CN219740102U/en active Active
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